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Spartacus2000
- Junior | Next Rank: 30 Posts
- Posts: 26
- Joined: Sun May 01, 2011 2:31 pm
A
Given wx=y and xy=?
1) w(x^2)=16
=> wx(x)=16 substitute wx=y
=> y(x)=16
=> xy=16
Sufficent
2) y=4
Don't know the value of x. So, can't find xy value.
Not Sufficient
